netdev - Re: IPv6: Bug in net-next

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Message-ID: <20140108140400.GH9007@order.stressinduktion.org>
Date:	Wed, 8 Jan 2014 15:04:00 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	François-Xavier Le Bail <fx.lebail@...oo.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: IPv6: Bug in net-next

On Wed, Jan 08, 2014 at 05:35:39AM -0800, François-Xavier Le Bail wrote:
> On Wed, 1/8/14, François-Xavier Le Bail <fx.lebail@...oo.com> wrote:
> 
> > > I think there is a bug in actual net-next.
>   
> > > When I execute this code and press Crtl-C, all the IPv6
> > > Link-Layer addresses are deleted.
>   
> > > This happened between
> > > c1ddf295f5183a5189196a8035546842caa2055a and HEAD.
>   
> > > [...]
>  
> > Sorry, it is not linked to this code.
> > I'm looking for the reason ...
>  
> It seems that the valid lifetime and preferred lft are set to 0 sec for autoconfigured LLA.

Grrr, I guess we should switch in addrconf_add_linklocal to call ipv6_add_addr
with INFINITY_LIFE_TIME preferred and valid lft. IFA_PERMANENT may now expire,
too since commit fad8da3e0 ("ipv6 addrconf: fix preferred lifetime
state-changing behavior while valid_lft is infinity").

Greetings,

  Hannes

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